Bernhard Riemann died in 1866 at the age of 39. Here is a list of things named after him. Riemann bilinear relations Riemann conditions Riemann form Riemann function Riemann–Hurwitz formula Riemann matrix Riemann operator Riemann singularity theorem Riemann surface Compact Riemann surface The tangential Cauchy–Riemann complex Zariski–Riemann space Cauchy–Riemann equations Riemann integral Generalized Riemann integral Riemann multiple integral Riemann invariant Riemann mapping theorem Measurable Riemann mapping theorem Riemann problem Riemann solver Riemann sphere Riemann–Hilbert correspondence Riemann–Hilbert problem Riemann–Lebesgue lemma Riemann–Liouville integral Riemann–Roch theorem Arithmetic Riemann–Roch theorem Riemann–Roch theorem for smooth manifolds Grothendieck–Hirzebruch–Riemann–Roch theorem Hirzebruch–Riemann–Roch theorem Riemann–Stieltjes integral Riemann series theorem Riemann sum Riemann–von Mangoldt formula Riemann hypothesis Generalized Riemann hypothesis Grand Riemann hypothesis Riemann hypothesis for curves over finite fields Riemann theta function Riemann Xi function Riemann zeta function Riemann–Siegel formula Riemann–Siegel theta function Free Riemann gas Riemann invariant Riemann–Cartan geometry Riemann–Silberstein vector Riemann-Lebovitz formulation Riemann curvature tensor Riemann tensor Riemannian graph Riemannian group Riemannian holonomy Riemannian manifold also called Riemannian space Riemannian metric tensor Riemannian Penrose inequality Riemannian polyhedron Riemannian singular value decomposition Riemannian submanifold Riemannian submersion Riemannian volume form Riemannian wavefield extrapolation Sub-Riemannian manifold Riemannian symmetric space Riemann's differential equation Riemann's existence theorem Riemann's explicit formula Riemann's minimal surface Riemann's theorem on removable singularities